Reuben s



(No Model.)

R. S. GHAPFEE. PUMP.

No. 532,025. Patented Jan. 5, 1895. v

mf f A m www,

UNTTED STATES PATENT @Errea REUBEN S. GIIAFFEE, OF SPRINGFIELD, ILLINOIS, ASSIGNOR F ONE-HALF TQ ARNOLD IV. BUTLER, OF SAME PLACE.

PUMP.

SPECIFICATION forming part of Letters Patent'No. 532,025, dated January 8, 1895. Application iiled May 29, 1894. Serial No. 512,843. (No model.) I

To @ZZ whom. it may oon/cern.-

Be it known that I, REUEEN S. CHAFFEE, a citizen oftheUnited States, residingat Springfield, in the county of Saugamon and State of Illinois, have invented certain new and useful Improvements in Pumps, of which the following is such a full, clear, and exact description as will enable those skilled in the art to which it pertains to make and use my said to invention.

The purposes of my invention are to provide a detachable cylinder which may be used with the stock of an ordinary wood pump, or with other pumps, and may be conveniently inserted in or removed from the pump stock, to provide a plunger or bucket within the cylinder of novel and improved construetion; to provide simple and eifective means for making an air tight connection of the cylinder with the pump stock, and to provide means whereby the cylinder and both the upper and lower valve ot' the pump may be readily removed from the pumpv thereby greatly facilitating cleaning, repairing, or replacement of the lower check valve. It is a serious practical objection to pumps as heretofore commonly7 constructed, that when itis desired to reach the lower check valve either for repairs or replacement, it is necessary to lift up the stock and tubing and detach the stock from the tubing. This is a laborious and dirty operation and as repairs to check valves of such pumps are frequently necessary, the cost and labor of such repairs are considerable. By the use ot' my improvements this objection is entirely obviated.

With these ends in view my invention consists of certain novel features of construction and combinations of parts shown in the au- 40 neXed drawings to which reference is hereby made and hereinafter particularly described and specifically claimed.

In the drawingsr-Figure lis a longitudinal vertical section through the pump on the axial line of the pump. Fig. 2 is au enlarged transverse section on the line 2 of Fig. 1. Fig. 3 is an enlarged transverse section on the line 3 of Fig. l. Fig. l is an enlarged detached perspective view of the body of the bucket as seen when looking toward the under side thereof. Fig. 5 is an enlarged detached perspective view of the bottom plate of the bucket as seen when looking toward the upper side of said plate. Fig. G is an enlarged detached perspective view of the packing ring on the bucket. Fig. 7 is an enlarged detached perspective view ofthe spring on the bucket.

Similar letters indicate like parts in all of the views.

I have illustrated my improvements as ap- 6o plied to a wood pump. The stock A and the handle B are of ordinary construction and need not be particularlydescribed. The hanble B is preferably connected with the stock by brackets B supporting a bolt or pivot b on which the handle turns, but other suitable connection may be used.

An eye bolt B2 is secured to the inner end of the handle B, and a clevis B3 passes through the eye bolt and is riveted or otherwise suit- 7o ably secured to the plunger rod C. The body of the cylinder D is preferably a seamless tube of thin brass, but any other suitable tube or cylinder may be used. At each end of the tube D is a hanged annular collar E which may be integral with the tube or maybe made separately and suitably secured to the tube. The collars E are externally threaded, and cylindrical screw caps F having central openingsf tit on the collars. Gaskets G of rubber 8o ro other elastic material tit around the collars E and rest on the tianges of the collars and are circumferentially expanded by the pressure of the screw caps so as to press against the interior surface of the bore of the pump stock and make an air tight contact therewith near the upperaud lower ends of the cylinder.

The pump tube IVI is of the usual well known form and is connected with the tube Ain any usualor convenient manner. the cylinder is in position in the pump stock the lower cap F rests on top of the tube H, as clearly shown in Fig.1. Cleats adetachably connected with the stock A by nails, screws or in other suitable manner abut at their lower ends against the upper cap F and serve to retain the cylinder in position in the stock. A check valve I of the usual well known Ecrin is seated on the inner upper surface of the lower capvF.

The body of the plungeror bucket consists oi' a circular plate K of a diameter somewhat When go l less than the internal diameter' of the tubeD and having downwardly extending integral flanges 7c. The body K has a central opening 7c and is pierced by holes k2 which accommodate the bolt ends Z of the yoke bars L. The bottom plate K is circular in form, is the same diameter as the plate K and has a central opening L3 and holes 7a4 matching the opening 7o and the holes k2 in the plate`K. The upper part of the plate K has a recess 7.25 which accommodates the lower ends of the flanges 7c. The spring K2 fits around thel flanges 7u and serves to expand the packing K3. which surrounds the springs K2.

In assembling the several parts of the plunger the bolt ends Z of the yoke bars L are iuserted in the holes k2 in the body K. The spring K2 is then placed around the flanges 7c. The packing ring K3 is then placed around the spring K2 and the lowerv plate K is placed so that the bolt ends l extend through the openings 7a4 and the lower edges of the flanges 7c rest in the recess 7x15 in the plate K. The nuts Z are then screwed on the bolt ends Z to` securely clamp the parts together or the bolt ends may be riveted if preferred.

A check valve M of ordinary construction, the form of which is clearly shown in Fig. 2 is seated on the upper surface of the plate K. The yoke bars L are secured to the rod C by bolts Z2 or other suitable means. The upper plate K of the plunger is somewhat larger than the openingf in the upper cap F in-or,- der that the upper surface of the plate K may engage with the under surface of the cap F when it is desired to remove the cylinder from the pump stock as hereinafter explained.

The operation of the pump is obvious and need not be detailed.

To remove the cylinder from the pump the cleats a are removed, the eye bolt B2 is then detached from the handle B and the plunger rod C is pulled upward until the upper surface of the plate K engages with the under surface of the cap F. The rod C is then pulled still farther upward drawing with it the cylinder D until the cylinder is completely withdrawn from the pump stock. In replacing the cylinder this operation is reversed. When it is desired to remove the plunger the top cap F is unscrewed and the plunger may then be readily taken out. It access to the lower `check valve is desired the lower cap F is unscrewed bringing the valve with it.

Having thus fully described my invention, what I claim as new, and desireto secure by Letters Patent,is-

In a pump the combination of the pump stock, the pump tube fitting in the lower end of the pump stock and adapted to support the pump cylinder, the brackets secured to the pump stock, the handle pivotally supported on said brackets, the detachable cylinder within the pump stock, the flanged collars on said cylinder, one at each end thereof, the upper and lower caps screwing on said flanged collars and adapted toy compress gas kets interposed betweensaid caps and the flanges of said flanged collars, said lower cap being provided with a central inlet opening and having a valve on its upper side, said cap being also adapted to rest onthe upper end of said tube in such manner as to prevent downward movement of the tube, said upper cap having a central outlet opening and being also adapted to serve as a stop against which the upper surface ofthe plunger abuts, the detachable cleat within the stock abutting against the upper cap and adapted to prevent upward movement of the cylinder, the plunger within the cylinder, said plunger having a top and a bottom plate, each provided witha central opening and between said plates a packing ring acted against by a spring within said packing ring,said plunger also having a valve on its top plate, the pump v rod with which the plunger is connected, the clevis secured to the upper end of the pump rod and the eyebolt detach-ably connecting the clevis with the pump handle, all co-operating as set forth.

In witness whereof I have hereunto subscribed, at Springfield, Illinois, this 26th day of May, A. D. 1894.

REUBEN S. CHAFFEE.

Witnesses:

TAD A. BAILEY, T. C. MATHER. 

